you didn't install it? If you bought the jeep with it and it's been like that the screen may be dead then. It's easy to get back there. Pop out the defrost vent and there will be 2 screws holding in the center dash bezel, take out the screws and easily pry off the center piece. That will expose the cd player. All you have to do then is unscrew the cd player and pull it out to expose all the wiring. check to make sure the harnesses are tight and i'm not recommending this cause I don't want you to shock yourself but what I would do is pull it out and hold it, turn the key towards you so the player comes on and not the engine and jiggle the harness and wires and see if the face turns on, if not it may be burned out.